Can I paint over AG111 with a different paint?

Technically, it is not impossible to paint over AG111 because it is already a topcoat, but we do not recommend it. There's no guarantee the paint you put over it will last or how it will end up looking cosmetically. If you want the protection of the AG111 but a different color than what's available, you're better off using your choice of color in another brand of paint as a topcoat, and then going over that with AG111 clear. We do advise doing a small spot test to make sure your paint and AG111 clear are compatible, however.